AZO vs ECL: Correlation
Measured on weekly returns over the past three years, AutoZone (AZO) and Ecolab (ECL) carry a correlation of 0.42, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are AZO and ECL?
Over the past 3 years, AZO and ECL moved with a correlation of 0.42, which is moderate. Recent behaviour matches the longer record: 0.44 over 1 year against 0.42 over 3. Over 5 years the correlation is 0.40, and the annualized covariance of weekly returns is 187.9 %².
Within AZO's tracked universe of 30 assets, ECL comes in at #4 by 3-year correlation. The last year tells two different stories: ECL led by 33.4 percentage points, -30.3% for AZO against +3.1% for ECL. On a rolling one-year basis the correlation drifted between 0.25 and 0.53, a moderate band.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
AZO vs ECL: side by side
| AZO (AutoZone) | ECL (Ecolab) | |
|---|---|---|
| 1-year return | -30.3% | +3.1% |
| 5-year return | +88.5% | +34.0% |
| Volatility (ann.) | 23.2% | 19.5% |
| Beta vs S&P 500 | 0.31 | 0.64 |
| Max drawdown (3Y) | -32.9% | -20.1% |
| Market cap | – | $80.1B |
| P/E (trailing) | 20.6 | 39.1 |
| Dividend yield | 0.00% | 0.98% |
| Sector / category | Consumer Discretionary | Materials |
Year-by-year returns
| Year | AZO | ECL |
|---|---|---|
| 2022 | +17.6% | -37.1% |
| 2023 | +4.8% | +37.9% |
| 2024 | +23.8% | +19.3% |
| 2025 | +5.9% | +13.2% |
| 2026 | -13.5% | +9.5% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are AZO and ECL good diversifiers for each other?
Reasonably. At 0.42, AZO and ECL keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
FAQ
What is the correlation between AZO and ECL?
The AZO/ECL correlation stands at 0.42 on a 3-year window (1 year: 0.44, 5 years: 0.40), computed from weekly returns as of 2026-08-27.
Is ECL a good diversifier for AZO?
Reasonably. At 0.42, AZO and ECL keep a meaningful degree of independence, and combining them has historically reduced portfolio volatility.
What does a correlation of 0.42 mean?
On the −1 to +1 scale, 0.42 describes how much the two returns move together: +1 is lockstep, 0 is independence, negative values mean opposite directions. It says nothing about which performed better.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/azo-vs-ecl.json
Markdown for the live badge, attribution link included:
[](https://www.pairbook.io/pair/azo-vs-ecl/)
Free with attribution; caching and terms are described in the API documentation.
Related comparisons
Hubs: AZO correlations · ECL correlations
